Positioning and feeding mechanism for blanking

Abstract

The utility model discloses a positioning feeding mechanism for blanking, which belongs to the technical field of blanking feeding and comprises a mounting frame and a conveyor belt, a plurality of transmission roll shafts are rotatably connected to the top end of the mounting frame, a driving device is arranged at the bottom end of the mounting frame, the conveyor belt is sleeved at the outer ends of the transmission roll shafts, and two movable components are arranged at the top end of the mounting frame. The side baffle assembly is arranged on the baffle body, the two threaded blocks can drive the bottom ends of the two supporting rods to move in the opposite directions by rotating the two-way threaded rod, and due to the fact that the two supporting rods are rotationally connected with each other, the height of the supporting rods and the height of the movable plate can be changed; when a plurality of cotton plates enter the space between the two baffle bodies under the guidance of the extension plates, the cotton plates at the bottom are blocked by the baffle bodies, and the cotton plates at the top are blocked and straightened by the X-shaped baffle formed by the two supporting rods, so that the cotton plates can be neatly stacked before entering a cutting mechanism, and the cotton plates can be conveniently cut at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of blanking and feeding, and more specifically, to a positioning and feeding mechanism for blanking. Background Art

[0002] A positioning and feeding mechanism for blanking refers to a device used to provide automatic or semi-automatic feeding functions during the cutting of industrial materials, in order to improve the cutting efficiency and accuracy. The function of this device is to position the material and supply it to the cutting equipment to ensure cutting according to the required specifications and dimensions. By using such a feeding device, manual operations can be reduced, production efficiency can be improved, and the accuracy and consistency of cutting can be ensured. It is designed and customized according to production requirements and material characteristics to ensure the best production efficiency and quality.

[0003] The patent with the Chinese patent publication number CN218614378U discloses an automatic feeding mechanism for foam processing. A cutting device is arranged on the top of the foam processing workbench. A chute is opened on the top of the foam processing workbench. A transmission screw is rotatably connected to the chute on the foam processing workbench through a bearing. An active block is arranged on the transmission screw. A feeding seat is arranged on the top of the active block. The foam block is clamped and positioned by the positioning plates on both sides. At the same time, the fixed seat triggers the abutting block to rotate and abut against the foam block under the limit and push of the moving strip block, realizing the limit fixation of the automatic feeding of the foam block, ensuring the stability of the automatic feeding of the foam block, avoiding tilting during the feeding process of the foam block, and thus generating offset during cutting and resulting in defective products, reducing the waste of foam processing materials.

[0004] When blanking sound-absorbing cotton boards and heat-insulating cotton boards, since the demand for such materials is large and their shapes are regular flat plates, factories often stack multiple cotton boards together and feed them into the cutting machine simultaneously during cutting processing to improve processing efficiency. However, the device in the above solution is not convenient for positioning and clamping multiple stacked cotton boards at the same time. The cotton boards cannot be neatly stacked before entering the cutting machine, and errors are likely to occur after blanking.

[0005] Therefore, it is necessary to provide a positioning and feeding mechanism for blanking to solve the above problems. Summary of the Utility Model

[0006] The utility model provides a positioning and feeding mechanism for blanking, which can improve the problems in the related technology that it is not convenient to position and clamp multiple stacked cotton boards at the same time, the cotton boards cannot be neatly stacked before entering the cutting machine, and errors are likely to occur after blanking.

[0007] The embodiment of the present application provides a positioning and feeding mechanism for blanking, including an installation frame and a conveyor belt. A plurality of driving roller shafts are rotatably connected to the top end of the installation frame. A driving device is arranged at the bottom end of the installation frame. The conveyor belt is sleeved on the outer ends of the driving roller shafts. Two symmetrically arranged movable components are arranged at the top end of the installation frame. Two adjusting components are arranged at the top end of the movable component. A baffle component is arranged at the outer end of the adjusting component. A side baffle component is arranged at the top end of the baffle component. The movable component includes a first connecting plate and two mounting blocks. The first connecting plate is fixedly connected to the outer end of the installation frame. A slide rail is fixedly connected to the outer end of the first connecting plate. The mounting block is slidably connected to the slide rail. The baffle component includes a baffle body. One end of the baffle body is fixedly connected with an extension plate. The extension plate is inclined. The side baffle component includes two support rods. The two support rods are rotatably connected at the middle part.

[0008] In the above technical solution of the embodiment of the present application, it has at least the following technical effects:

[0009] (1) A side baffle component is arranged on the baffle body. By rotating the bidirectional threaded rod, the two threaded blocks can drive the bottom ends of the two support rods to move in opposite directions respectively. Since the two support rods are rotatably connected to each other, the height of the support rods and the movable plate can be changed. When multiple cotton boards enter between the two baffle bodies under the guidance of the extension plate, the bottom cotton board will be blocked by the baffle body for positioning and straightening, and the top one will be blocked and straightened by the X shape formed by the two support rods, so that multiple cotton boards can be neatly stacked before entering the cutting mechanism, which is convenient for cutting multiple cotton boards at the same time.

[0010] (2) Movable components are respectively arranged on both sides of the installation frame. An adjusting component and a baffle component are respectively arranged on the movable component. The rotating disk and the fixed disk are rotatably connected. By pulling the second handle, the baffle body drives the connecting rod and the rotating disk to rotate, and the angle of the connecting rod can be adjusted, so as to adjust the position of the baffle body. By adjusting the positions of the two baffle bodies, they can be adapted to cotton boards of different sizes.

[0011] In some embodiments, the movable component further includes a second connecting plate. The second connecting plate is fixedly installed between the two mounting blocks. A first handle is fixedly connected to the outer end of the second connecting plate.

[0012] In some embodiments, the baffle component further includes a second handle. The second handle is fixedly installed at the outer end of the baffle body. Two connecting rods are rotatably connected to the outer end of the baffle body.

[0013] In some embodiments, the adjusting assembly includes a rotating disk and a fixed disk. The top of the fixed disk is arranged in a frustum shape. The bottom end of the rotating disk is adapted to the top of the fixed disk. A rotating shaft is fixedly connected to the bottom end of the rotating disk. The rotating disk is rotatably connected to the fixed disk through the rotating shaft. The fixed disk is fixedly installed at the top end of the mounting block.

[0014] In some embodiments, a plurality of sliding grooves are formed in the outer side of the fixed disk and are distributed at equal intervals in a ring shape. A limiting block is slidably connected to the inner wall of the sliding groove, and a telescopic spring is arranged inside the sliding groove. Two ends of the telescopic spring are respectively fixedly connected to the inner wall of the sliding groove and the limiting block. The outer end of the rotating disk is fixedly connected to the connecting rod. A plurality of limiting grooves adapted to the limiting blocks are formed in the inner side wall of the rotating disk.

[0015] In some embodiments, the side baffle assembly further includes a fixed plate and a movable plate. The fixed plate is fixedly connected to the baffle body. The bottom end of the support rod is slidably connected to the fixed plate. The top end of the support rod is slidably connected to the movable plate. Two sliding rods are fixedly connected to the top end of the fixed plate. The movable plate is slidably connected to the sliding rods.

[0016] In some embodiments, the side baffle assembly further includes a bidirectional threaded rod. The bidirectional threaded rod is rotatably connected to the top end of the fixed plate. Threaded blocks are fixedly connected to the bottom ends of the two support rods. The bidirectional threaded rod is threadedly connected to the threaded blocks. A turntable is fixedly connected to one end of the bidirectional threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the first overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the second overall structure of the present utility model;

[0020] Figure 3 It is a schematic diagram of the partial enlarged structure of the present utility model;

[0021] Figure 4 It is a schematic diagram of the partial exploded structure of the present utility model;

[0022] Figure 5 It is a schematic diagram of the baffle assembly structure of the present utility model;

[0023] Figure 6 Exploded structural schematic diagram of the adjustment component of the present utility model;

[0024] Figure 7 Exploded structural schematic diagram of the side baffle component of the present utility model.

[0025] Description of reference numerals in the figure:

[0026] 1. Installation frame;

[0027] 2. Driving roller shaft;

[0028] 3. Conveyor belt;

[0029] 4. Driving device;

[0030] 5. Movable component; 51. First connecting plate; 52. Slide rail; 53. Mounting block; 54. Second connecting plate; 55. First handle;

[0031] 6. Side baffle component; 61. Fixed plate; 62. Slide rod; 63. Movable plate; 64. Bidirectional threaded rod; 65. Support rod; 66. Threaded block; 67. Turntable;

[0032] 7. Adjustment component; 71. Rotating disk; 72. Fixed disk; 73. Limiting block; 74. Telescopic spring; 75. Rotating shaft; 76. Limiting groove;

[0033] 8. Baffle component; 81. Baffle body; 82. Second handle; 83. Extension plate; 84. Connecting rod. Detailed implementation manners

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit the present application. The terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0036] When punching the sound-absorbing cotton board and the thermal insulation cotton board, since the demand for such materials is large and the shape is a regular flat plate, the factory usually stacks multiple cotton boards together and feeds them into the cutting machine at the same time for cutting to improve the processing efficiency. However, when multiple cotton boards are stacked together, they are prone to misalignment during transportation on the conveyor belt, and the traditional positioning device is not convenient for positioning and clamping multiple stacked cotton boards at the same time.

[0037] Based on this, it can improve the problem in the related technology that it is not convenient to position and clamp multiple stacked cotton boards at the same time, and the cotton boards cannot be neatly stacked before entering the cutting machine, which is prone to errors after punching.

[0038] Please refer to Figures 1 - 7 , a positioning and feeding mechanism for punching, including an installation frame 1 and a conveyor belt 3. A plurality of driving roller shafts 2 are rotatably connected to the top end of the installation frame 1. A driving device 4 is arranged at the bottom end of the installation frame 1. The conveyor belt 3 is sleeved on the outer ends of the driving roller shafts 2. Two symmetrically arranged movable components 5 are arranged at the top end of the installation frame 1. Two adjusting components 7 are arranged at the top end of the movable component 5. A baffle component 8 is arranged at the outer end of the adjusting component 7. A side baffle component 6 is arranged at the top end of the baffle component 8. The movable component 5 includes a first connecting plate 51 and two mounting blocks 53. The first connecting plate 51 is fixedly connected to the outer end of the installation frame 1. A slide rail 52 is fixedly connected to the outer end of the first connecting plate 51. The mounting block 53 is slidably connected to the slide rail 52. The baffle component 8 includes a baffle body 81. One end of the baffle body 81 is fixedly connected with an extension plate 83. The extension plate 83 is inclined. The side baffle component 6 includes two support rods 65. The two support rods 65 are rotatably connected at the middle.

[0039] The device in this solution is mainly used to convey the cotton boards to be cut, such as sound-absorbing cotton boards and thermal insulation cotton boards and other materials. A plurality of driving roller shafts 2 are rotatably connected to the top end of the installation frame 1, and the conveyor belt 3 is installed on the outer enclosure of the driving roller shafts 2. The conveyor belt 3 is driven to move by the rolling of the driving roller shafts 2. A driving device 4 is installed at the bottom of the installation frame 1. The driving device 4 is mainly used to drive the driving roller shafts 2 to rotate. The driving device 4 is mainly composed of a driving motor, a power controller, a driving belt pulley and a belt. The driving belt pulley and the belt drive the driving roller shaft 2 at the head end. The position where the driving device 4 is installed is the head end of the device, which is the port for feeding materials.

[0040] At its end, two movable components 5 are installed. The movable components 5 are mainly fixed to the outer end of the mounting frame 1 through the first connecting plate 51. An adjusting component 7 and a baffle component 8 are respectively arranged on the movable components 5. The rotating disk 71 and the fixed disk 72 are rotatably connected. By pulling the second handle 82, the baffle body 81 drives the connecting rod 84 and the rotating disk 71 to rotate, so that the angle of the connecting rod 84 can be adjusted, and thus the position of the baffle body 81 can be adjusted. By adjusting the positions of the two baffle bodies 81, it can be adapted to cotton boards of different sizes. A side baffle component 6 is arranged on the baffle body 81. By rotating the bidirectional threaded rod 64, the threaded block 66 can drive the bottom ends of the two support rods 65 to move. Since the two support rods 65 are rotatably connected to each other, the height of the support rods 65 and the movable plate 63 can be changed. The cutting device is installed at the end of the mounting frame 1, that is, at the end far from the driving device 4. When multiple cotton boards are stacked together and transported from the first end to the cutting mechanism at the end through the conveyor belt 3, multiple cotton boards can be positioned and clamped at the same time, so that multiple cotton boards can be neatly conveyed into the cutting machine at the same time.

[0041] Optionally, in some embodiments, refer to Figures 3 - 5 , the movable component 5 further includes a second connecting plate 54. The second connecting plate 54 is fixedly installed between the two mounting blocks 53, and a first handle 55 is fixedly connected to the outer end of the second connecting plate 54.

[0042] A slide rail 52 is fixed to the outer end of the first connecting plate 51. An activity groove adapted to the slide rail 52 is provided on the mounting block 53, so that the mounting block 53 is slidably connected to the slide rail 52. The two mounting blocks 53 are connected together by the second connecting plate 54, and a first handle 55 is fixed to the second connecting plate 54. By holding the first handle 55 and pulling it left and right, the adjusting component 7, the baffle component 8 and the side baffle component 6 can be moved simultaneously to adjust the position, improving the convenience of use.

[0043] Optionally, in some embodiments, refer to Figures 3 - 6 , the baffle component 8 further includes a second handle 82. The second handle 82 is fixedly installed at the outer end of the baffle body 81, and two connecting rods 84 are rotatably connected to the outer end of the baffle body 81.

[0044] The adjusting component 7 includes a rotating disk 71 and a fixed disk 72. The top of the fixed disk 72 is arranged in a frustum shape. The bottom end of the rotating disk 71 is adapted to the top of the fixed disk 72. A rotating shaft 75 is fixedly connected to the bottom end of the rotating disk 71. The rotating disk 71 is rotatably connected to the fixed disk 72 through the rotating shaft 75. The fixed disk 72 is fixedly installed at the top end of the mounting block 53.

[0045] A plurality of sliding grooves are provided on the outer side of the fixed disk 72 and are distributed at equal intervals in a circular shape. The inner wall of the sliding groove is slidably connected with a limiting block 73, and a telescopic spring 74 is arranged inside the sliding groove. The two ends of the telescopic spring 74 are respectively fixedly connected with the inner wall of the sliding groove and the limiting block 73. The outer end of the rotating disk 71 is fixedly connected with a connecting rod 84, and a plurality of limiting grooves 76 adapted to the limiting blocks 73 are provided on the inner side wall of the rotating disk 71.

[0046] The above-mentioned fixed disk 72 is fixed on the mounting block 53. The top of the fixed disk 72 is frustum-shaped, and a circle of sliding grooves is provided on the inclined side of the frustum. A telescopic spring 74 and a limiting block 73 are arranged inside each sliding groove. At the same time, the bottom vacancy of the rotating disk 71 is adapted to the top of the fixed disk 72. The rotating shaft 75 is rotatably connected with the fixed disk 72, and a circle of limiting grooves 76 adapted to the limiting blocks 73 is provided on the inner side wall of the rotating disk 71. The limiting block 73 is pushed outwards by the acting force of the telescopic spring 74. When the rotating disk 71 drives the connecting rod 84 to rotate, the limiting block 73 will abut into different limiting grooves 76, thus forming a restriction. When it rotates to a suitable position, by clamping the limiting block 73 in the limiting groove 76, it can be made not to rotate by itself easily, and the stability when it stops is improved.

[0047] The baffle body 81 is connected with the rotating disk 71 through the connecting rod 84. The connecting rod 84 is fixedly connected with the rotating disk 71 and is rotatably connected with the baffle body 81. A second handle 82 is fixed on the back of the baffle body 81. The second handle 82 is mainly used to conveniently pull the baffle body 81, so that the baffle body 81 drives the connecting rod 84 and the rotating disk 71 to rotate. By adjusting the angle of the connecting rod 84, the extending distance of the baffle body 81 can be adjusted. By adjusting the distance between the two baffle bodies 81 on both sides, it can be made to adapt to cotton boards of different sizes, increasing its practicability. It is worth mentioning that when the angle between the connecting rod 84 and the baffle body 81 is perpendicular, the distance that the baffle body 81 moves outwards is the largest. At the same time, an extension plate 83 is fixed at one end of the baffle body 81. The extension plate 83 is arranged to be inclined outwards relative to the baffle body 81. When the cotton moves between the two baffle bodies 81, the extension plate 83 can play a guiding role and improve the stability of positioning and clamping.

[0048] Optionally, in some embodiments, please refer to Figure 4 and Figure 7 , the side baffle assembly 6 further includes a fixed plate 61 and a movable plate 63. The fixed plate 61 is fixedly connected with the baffle body 81. The bottom end of the support rod 65 is slidably connected with the fixed plate 61, and the top end of the support rod 65 is slidably connected with the movable plate 63. Two sliding rods 62 are fixedly connected to the top end of the fixed plate 61, and the movable plate 63 is slidably connected with the sliding rods 62.

[0049] The side baffle assembly 6 further includes a bidirectional threaded rod 64. The bidirectional threaded rod 64 is rotatably connected to the top end of the fixed plate 61. Threaded blocks 66 are fixedly connected to the bottom ends of both support rods 65. The bidirectional threaded rod 64 is threadedly connected to the threaded blocks 66. One end of the bidirectional threaded rod 64 is fixedly connected to a turntable 67.

[0050] In this solution, the side baffle assembly 6 is installed on the top of the baffle assembly 8. The fixed plate 61 is fixed to the top of the baffle body 81. Slide rods 62 are fixed at both ends of the fixed plate 61. A movable plate 63 is slidably connected to the slide rods 62. Between the fixed plate 61 and the movable plate 63, two support rods 65 are provided. The two support rods 65 are rotatably connected to each other in the middle. At the same time, the two ends of the support rods 65 are respectively slidably connected to the fixed plate 61 and the movable plate 63. Threaded blocks 66 are fixed to the bottoms of the support rods 65. A bidirectional threaded rod 64 is rotatably installed at the top end of the fixed plate 61. The bidirectional threaded rod 64 is threadedly connected to the threaded blocks 66. A set of threads with opposite directions are provided on the bidirectional threaded rod 64. A turntable 67 is fixed to the leading end of the bidirectional threaded rod 64. When the turntable 67 is rotated, the two threaded blocks 66 threadedly connected to the bidirectional threaded rod 64 will move in opposite directions, so that the two support rods 65 rotate, and the top ends of the support rods 65 drive the movable plate 63 to move up and down, thereby changing the height of its positioning and clamping, so that it can be adjusted according to different numbers of cotton boards. When multiple cotton boards enter between the two baffle bodies 81 through the guidance of the extension plate 83, the bottom cotton board will be blocked by the baffle body 81 for positioning and straightening, and the top one will be blocked and straightened by the X shape formed by the two support rods 65, so that multiple cotton boards can be neatly stacked before entering the cutting mechanism, reducing the dimensional error after cutting.

[0051] Working principle: When using this device to convey cotton boards, first, the position of the movable assembly 5 needs to be adjusted. By holding the handle 55 and pulling it left and right, the adjusting assembly 7, the baffle assembly 8, and the side baffle assembly 6 can be moved simultaneously to adjust the position. Then, according to the size of the cotton board, the positions of the two baffle assemblies 8 are adjusted. By pulling the baffle body 81, the baffle body 81 drives the connecting rod 84 and the rotating disk 71 to rotate. By adjusting the angle of the connecting rod 84 and adjusting the distance between the two baffle bodies 81 on both sides, it can be adapted to different sizes of cotton boards. Then, multiple stacked cotton boards are placed on the conveyor belt 3 and moved towards the cutting mechanism. When multiple cotton boards enter between the two baffle bodies 81 through the guidance of the extension plate 83, the bottom cotton board will be blocked by the baffle body 81 for positioning and straightening, and the top one will be blocked and straightened by the X shape formed by the two support rods 65, so that multiple cotton boards can be neatly stacked before entering the cutting mechanism, and then processed and punched by the cutting mechanism.

[0052] The above are only the preferred specific embodiments of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A positioning and feeding mechanism for blanking, comprising a mounting frame (1) and a conveyor belt (3), characterized in that: The top of the installation frame (1) is rotatably connected to a plurality of transmission rollers (2), the bottom of the installation frame (1) is provided with a driving device (4), the conveyor belt (3) is sleeved on the outer ends of the transmission rollers (2), the top of the installation frame (1) is provided with two symmetrically arranged movable components (5), the top of the movable components (5) is provided with two adjustment components (7), the outer ends of the adjustment components (7) are provided with baffle components (8), and the top of the baffle components (8) is provided with a side baffle component (6); The movable assembly (5) comprises a connecting plate (51) and two mounting blocks (53), wherein the connecting plate (51) is fixedly connected to the outer end of the mounting frame (1), the outer end of the connecting plate (51) is fixedly connected to a slide rail (52), and the mounting blocks (53) are slidably connected to the slide rail (52); The baffle assembly (8) comprises a baffle body (81), one end of the baffle body (81) is fixedly connected to an extension plate (83), and the extension plate (83) is arranged in an inclined manner; The side stop assembly (6) comprises two support rods (65), and the two support rods (65) are rotatably connected in the middle.

2. A blanking positioning and feeding mechanism according to claim 1, characterized in that: The movable component (5) further comprises a second connecting plate (54), wherein the second connecting plate (54) is fixedly mounted between the two mounting blocks (53), and a handle (55) is fixedly connected to the outer end of the second connecting plate (54).

3. A blanking positioning and feeding mechanism according to claim 1, characterized in that: The baffle assembly (8) further comprises a second handle (82), wherein the second handle (82) is fixedly mounted on the outer end of the baffle body (81), and the outer end of the baffle body (81) is rotatably connected to two connecting rods (84).

4. A blanking positioning and feeding mechanism according to claim 3, characterized in that: The adjusting assembly (7) comprises a rotating disk (71) and a fixed disk (72); the top of the fixed disk (72) is arranged in a truncated cone shape; the bottom of the rotating disk (71) is adapted to the top of the fixed disk (72); the bottom of the rotating disk (71) is fixedly connected to a rotating shaft (75); the rotating disk (71) is rotatably connected to the fixed disk (72) via the rotating shaft (75); and the fixed disk (72) is fixedly mounted on the top of the mounting block (53).

5. A blanking positioning and feeding mechanism according to claim 4, characterized in that: The outer side of the fixed disk (72) is provided with a plurality of circumferentially equidistantly distributed sliding grooves, the inner wall of the sliding groove is slidably connected to a limit block (73), and a telescopic spring (74) is arranged inside the sliding groove, and the two ends of the telescopic spring (74) are respectively fixedly connected to the inner wall of the sliding groove and the limit block (73), the outer end of the rotating disk (71) is fixedly connected to the connecting rod (84), and the inner wall of the rotating disk (71) is provided with a plurality of limit grooves (76) adapted to the limit block (73).

6. A blanking positioning and feeding mechanism according to claim 1, characterized in that: The side baffle assembly (6) further comprises a fixed plate (61) and a movable plate (63), wherein the fixed plate (61) is fixedly connected to the baffle body (81), the bottom end of the support rod (65) is slidably connected to the fixed plate (61), the top end of the support rod (65) is slidably connected to the movable plate (63), the top end of the fixed plate (61) is fixedly connected to two sliding rods (62), and the movable plate (63) is slidably connected to the sliding rod (62).

7. A blanking positioning and feeding mechanism according to claim 6, characterized in that: The side stop assembly (6) further comprises a bidirectional threaded rod (64), wherein the bidirectional threaded rod (64) is rotatably connected to the top end of the fixed plate (61), the bottom ends of the two support rods (65) are fixedly connected to a threaded block (66), the bidirectional threaded rod (64) is threadedly connected to the threaded block (66), and one end of the bidirectional threaded rod (64) is fixedly connected to a rotating disk (67).

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